偶联剂对PBS/碳酸钙晶须复合材料力学性能与热稳定性的影响  

Effect of a Coupling Agent on Mechanical Properties and Thermal Stability of PBS/Calcium Carbonate Whisker Composites

作　　者：杨学莉[1,2] 于磊[1,2] 刘文广 张秀成[1,2] 

机构地区：[1]东北林业大学理学院,黑龙江哈尔滨150040 [2]黑龙江省阻燃材料分子设计与制备重点实验室,黑龙江哈尔滨150040 [3]SGS通标标准技术服务有限公司上海分公司,上海200233

出　　处：《中国塑料》2015年第6期28-33,共6页China Plastics

摘　　要：用γ-氨丙基三乙氧基硅烷(KH550)对碳酸钙晶须(CCW)表面处理后,与聚丁二酸丁二醇酯(PBS)混合,采用双螺杆挤出机熔融混合挤出造粒,制得PBS/CCW复合材料。结果表明,在1%~5%(质量分数,下同)的低添加量时,PBS/CCW复合材料的拉伸强度、弯曲强度和冲击强度分别增加了1%~3.9%、10%~16%和1%~4.5%;CCW添加量大于5%时复合材料的拉伸强度与CCW添加量大于10%时的冲击强度则分别随CCW添加量的增加而降低,而弯曲强度随CCW添加量的增加而逐渐提升;KH550表面处理CCW可以改善PBS/CCW复合材料的界面黏结性;CCW具有成核剂的作用,使PBS的结晶温度提高了0.2℃,结晶度增加了0.2%。Calcium carbonate whisker(CCW) was surface modified by 3-aminopropyltriethyloxy silane(KH550) and blended with poly(butylene succinate)(PBS) and subsequently granulated via melt extrusion.When the loading of CCW was below 5%,the tensile,bending,and impact strengths of the resultant PBS/CCW composites increased 1%~3.9%,10%~16%,and 1%~4.5%respectively,based on neat PBS.When the loading of CCW was larger than 5%and10%,the tensile strength and impact strength began to reduce,respectively.However,the bending strength kept increasing with CCW loading.Surface modification of CCW by KH550 improved the interfacial adhesion of the PBS/CCW composites.CCW acted as a nucleating agent,the crystallization temperature and crystallinity of PBS increased 0.2℃ and 0.2%,respectively.

关 键 词：聚丁二酸丁二醇酯 碳酸钙晶须 硅烷偶联剂 力学性能 热稳定性 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]